IT security consulting & software engineering

Good security starts with good engineering.

I help organisations understand their risks, build secure software, and take control of their infrastructure.

Security belongs in every layer.

From architectural decisions to the systems you run every day.

01 — What I do

From a clear assessment to a working solution.

Bring me a specific problem or an early idea. We’ll work out what needs attention and what a useful result looks like.

Security audits & consulting

Understand where you stand before deciding what to change.

Review your application or infrastructure, identify weaknesses, and turn the findings into a practical plan. The aim is a clear set of priorities your team can act on.

Assessment / Architecture / PrioritiesService details →

Secure software engineering

Build applications with security in the architecture.

Design and develop custom web applications, or work on an existing codebase. Security and privacy are considered alongside how the software will be maintained and used.

Web applications / Ruby on Rails / Secure designService details →

Privacy engineering

Translate data protection requirements into technical decisions.

Look at which data your systems collect, where it moves, and who can access it. Shape the architecture around data minimisation and protection, with clear documentation of the technical choices.

Data flows / Access / Privacy by designService details →

Infrastructure & on-prem

Keep control of your systems and the data they hold.

Plan and deploy on-prem infrastructure, review configurations, and improve access controls. The result should be something your team can operate and understand.

On-prem / Deployment / HardeningService details →

02 — How I work

Understand first. Build with purpose.

Good advice should leave you with a decision you can make. Good engineering should leave you with a system you can maintain.

01

Get the full picture

We discuss your systems, constraints, and priorities. I ask questions before recommending changes.

02

Agree on the work

We define the scope, deliverables, and responsibilities. You know what is being done and why.

03

Build and hand over

I implement the agreed changes and document the decisions, so the knowledge stays with your team.

03 — About

Portrait of Arne Bauer

Arne Bauer

IT security · Privacy · Software

One person. A direct working relationship.

I’m Arne, an independent IT security consultant and software engineer based near Munich.

My work sits at the intersection of security, software, and data protection. I approach a system as a whole: the code, the infrastructure, the information it handles, and the people who depend on it.

My background combines a focus on data protection and IT security with experience in custom web applications and on-prem environments. I value clear explanations, documented decisions, and solutions that remain understandable after the project ends.

04 — Get in touch

What are you working on?

Tell me a little about your project, the problem you’re facing, or the system you want to improve. We can start with a conversation.